I just got what I thought was going to be a Spinja arena through ebay. I had one as a kid, so looking at it I think it looks exactly the same as what I had back then, as do the spinners and ninjas inside. The only difference is they have stickers on the spinners saying Tomy Battlers. I was just wondering if this is at all unusual? I have included an original yellow Spinja spinner and red ninja in my pictures for comparison.

I was also wondering if there was any consensus on how much these should be bought for, because I'm thinking about trying to collect some more, but I don't want to get ripped off.
Cheers